There are a lot of thing to do to improve the magento seo. But one of this is improve de Magento URL. To improve the Magento URL SEO, we need make some change in the Magneto configuration.

1. Use server rewrites. This allow you have more user friendly URL's like example.com/example-product.html and not example.com/?p=125. The search engine use

Set System > Configuration > Web > “Use Web Server Rewrites” to Yes

2. Prevent Magento to duplicate URL contents.

Set System > Configuration > Catalog > “Use Categories Path for Product URLs” to No

3. Use Tag canonical to say to the search engine that the page is the main page. The search engine will give the page the highest priority.

Set System > Configuration > Catalog > “Use Canonical Link Meta Tag For Categories” to Yes